Cover-support for abrading or polishing tools.



A. BATES.

OOVEB. SUPPORT FOR ABRADING 0R POLISHING TOOLS. APPLICATION YIILED MAR.29, 1912.

1 1'19 ,000. Patented Dec. 1, 1914.

2 SHEETS-SHEET 1.

WTA/ESSES WVHVTJ/K jaw M04 M 5% @M WW /?MWM THE NORRIS PETERS C0,.EHO'lD-LITHQ, WASHINGTUN, I). C

A. BATES. COVER SUPPORT FOR ABRADING on rousnme TOOLS.

APPLIGATION FILED MAR. 29. 1912.

Patented Dec. 1, 1914.

2 SHEETS-SHEET 2.

Mm [55557 //\/l//\/70/Z MM 60L ci A 1UP NORRIS PETERS CQ. PHOTO-LITHOHWASHINGTON. D. C.

* S A ESP I N O FICE;

To all whom-it may gammy; 1'

[ARTHUR BATEs, or LEIoEsrEE, ENGLAND, ASSIGNOR TO uuI'rEn sHoEMACIiiNEE? COMPANY, OF \PATERSON, ,NEW JERSEY," A CORPOR.ATION OF NEWJERSEY.

, 'Be it known thatI, AR T HUR" BATES, a subject 5' of" the King ofEngland, residing at Leicester, Leicestershire, England, have inventedcertain Improvements 1n Coven Supports for Abrading or Polishing Tools,of which the following description, in con-' nection with theaccompanying drawingsyis a specificatiom 'like reference characters onseveralfigures l l This invention relates to abrading or polthe drawingsindicating like "parts in the ishing tools that have a renewable coverand is illustrated inconnection with bu'ifing roll cover."

Scou-ring or bufling rolls. usually comprise" an inner spindle tosupport the roll, a coreof some lightmaterial to give the requisitediameter and "an abrasive cover which is expands the';-cover sothatitfits somewhat and shall becheap to produce. Accordinglyinavbufling or likeroll havingacore and 40 loosely on the core andconsequently there is a great tendency when work is applied for thecover to creep'and become cracked and thereby destroyed Further, on cercoreis desirable i i It is an object o'fthe present invention to tainclasses of Work'a flexible'and nota solid obtain a core which shall befiexiblegshall run "truly and be. in balance shall be sufiicientlyeXpan'sible to insure that the bellying of the abrasive cover u-ndercentrifugal action is accompanied by a corresponding inereasein thediameter of the core; shall afford a practically complete support forthe whole of the abrasive cover at all times;

an outer flexible abrasive cover there is provided between the core andthe cover a'cover supporter bed comprising a strip, of leather or likematerial which; is'adapted' to en-z circle the core and theexteriorpartof which when the roll is rotated."

It has, been foundin bufling certain parts (for lexamplethe bottoms)offboots" and shoes'thatit is.,o'f,,advantagetoShave two scouring rollsone carrying 1 coarse abrasive material, such as sandpapempoh arelatively- L, firm support and: .the gothe'r carrying fine I speification of Letterslatent.

covEEssuProEr Eon ABRADING on roL IsmNe rooLs.

, abrasive materialon a flexible support; the

first roll is usedjfor removing the bulk of the material and thesecondroll forgiving ries' of overlapping tongues or leaves only one roll needbe used, for by pressing'the Work firmly :upon the roll the tongues or pPatented near, 1914.

Applicationfiled March 29,1912. Serial No. 687,038.

the.fi1'l lSh.1It"lS found that when the roll comprises leather'slashedto produce a seleaves are. forcedinward to form at that point.a, practically solid core so that considerable material is removed fromthe Work; on the other hand, when the work is to'be finished, it ispressed lightly upon support is inthe form of a leather strip ofrhomboidaloutline which is so narrow that it can be wound spirallyaround the core and which is' cut into a 'seriesfof tongueslying'acrossthe strip, the cuts preferably extending across the stripina direction inclined'obliquelyiin relation to the side of the strip,which inclination can be varied according to requirements. v i a Theleather instead of being cut into wide tongues may have a'series of cutsor :slits extendingacross the strip atanangle to the side of the stripand an additional series of cuts extending at a similar inclination butin the opposite direction, the two series of cutscrossing and thusforming a series of narrow tongues which givea greaterflexibility to theroll. When the roll is rotated these tongues are forced out equallytoward or into a radial position by 'centrifugal force and thereforetend to keep the "abrasive materialstretched evenly [along its surface,

whileat the samejtime permitting' itto yield according to the pressurewith which the workis pressed against the roll.

The flexible bed or cushion has been as 1 l scribed as being of leather,but it is obvious that any other suitable material might be used. i i Va These and other features of the invention including c'ertaindetails ofconstruction and:

combinations of :parts will be described" in J connection; witnan lillustrative device and pointed out infthel appended claims. a

the dr'awingsi Figure 1 is a"plan, partly in section ,of fa, buttingroll inwhich i 55 occupy during rotation of the roll v lt is found'thatthe sandpaper so supported re sponds very sensitively 'to the pressureof 60 i the surfaceot the; work being operated upon.

7 the present'invention is emb is-an end elevation, partly in section,of the roll shown in Fig. -'l, the arrowindicatingthe direction ofrotation; Fig. 3 shows on an exaggerated scale a portion ofacover support in the form of a leather strip slit so as to, produce wide,tonguesand lfig 4 shows on a similar scale the result obtained by sub' jectingthe piece of material shown in Fig. 3 to a second slitting operationwhereby each vof thewidetongues is cut into a plurality of narrowv ones!i,. g Thesroll chosenrfori illustration issof the type shown in LettersPatentQtoJVilliam- Gordon,-No. 8 )l,003,ito which reference may I belied-for a more detailed description of its wide, said strip-beinginthfillllStI iltiVQ 11011 structurer The roll: comprises a;w.oodeni corelinounted in any suitable fashion upon thensual rro-. tatable spindle3;1- Immediately surrounding the; wooden core .tl1ere.-is provided afiexible leather. support .5 aroundwhich the, abrasi ve material inmthisacase sandpaper, 15 wrapped ,and .uponM-whichnit 1s securely clampedatneither; end :ototh roll. by i any;

: usualx or suitable. clamping means; such tor example as the fin3fers;9..s.. 1L1; The leather inthe presentainstance comprises a. stripabout one-Quartenof. anuinch thick and aboutz an inchandxthre'e-quarter's of rhomboidal vform. In order :to prepare itfor-acting as a flexible bed for the sandpaper a series. of slits-or(slashes are made-across the strip at any convenient angle, and .these islits extend to withinsa smalldistance ofthe inner surface, theslitsabeing at a: suitable oblique angle to; the surface "of;the-leather. The slits are, soeclose to each other that parallelsidedtonguesor leaves.;ll--.,of leather, about a thirty-secondroffaninch thick, are formed which are joined together at their bases :bythe-11nc ut=,1 oontion of, the leather. The strip, of leather is ,then;wound spirally aroundthe coreof the roll and secured there to manysuitable :mannerq J .When. theiroll is rotated aver y, high speed the:tongues by centrifugal action Willtend to'become radial and in so doingwill enlarge the" circumference, of the-roll and thussupportttheisandpaper equally at all points." Inthe upper half of Fig.21 the I tongues are {show-1r theiposition :which they occupy when theroll is atrest; and in theilower half, in zthe position which ,they

the Work upon. it and that its contact surface readily conforms tothe:varying contours .'of,

I Further, -is=sfemlde a its-W rr he Pres r of t We t gainst the l i wfl nietyf' tii esul emari b aeb aiee l EFQ E-Bk stance, if the work isgently pressed aga nst he eereh zed a iiel ali, a, hen a'core, a coversupport wrapped about the roll a velvety finish producedwhereas if morepressure is exerte dthe'tongues of leatherareelQSed-up to form moresolid support with resultant changes iii-the quanity of material removedand in the surface produced on the work.

It is obvious that the leather be made ii exibleb'ycutting in a numberofway s "In Fig-e, itoitexainnl tl slits slashes c s one another, theresult of this treatment being that. the wide tonguesshowncinFig..3

are eaohzcut, upinto a series-lot narrower ones which upon rotation ofthenloll tendtq fly out iinto radial position, thus producing a somewhatmore even, surface than is ob;

tained when the slits; are, all paralleltoon e" another.

material .constructedin accordance, with, the pres nt inv n i n; willIllQre gi'i agli give he required finish to the work than "the rolls. atresent invusei and itihas bee ia e ained hat by us ngiaimedi m coaris nsot fibre sire m er a1; o e;n0l1,conet tut diin.ao or ance with thepresent invention may bgused in, lacetofvthe,two'ioldettype' rol sz rryilg a se nd, abra ive mate a Is u s-11 ir lye @In u h the who lss anfirst p ssed fi mly :againstih ir lso thetithe sur a e o th attere@9mes1firm nd-han and afterwardiit i pressed, tlyja la netf t e. l thahe en re sii faq ie the br s ma rial-.may beiresil rs peather prov ded zl fh s its r ans id' not togetherjand extending at an angle-oblique re,m -,flex b e\9eter in emini a i flv tl i -cover upport- 99 M ibe u enShow n or ompri n asse o flsib em ee i si, a. ilill l llel y 9f overlapin o gues n ro the ew h; sa d it e il sze tending, obliquely v-tothaperiphery of said 3. An abrading orpolishingtool having-ti.

c e a d. a b eoo er insemi ation w I co rise pe loc ted i etw ,s id brer or c mpr si aws et of xi e m t l ip w d-w hi .s eii slin dli t ed end est ndi sebl qi y its spree,

said core, .sid upport Consisting of ;a s heet In testimony whereof Ihav signed my .Of-l'eather having a plurality vof slits formname to thisspecificationin the presence of ing thin contiguous tongues extendingobtwo subscribing Witnesses.

li quely from. said sheet,a .coven of sand- ARTHUR BATES. 5 paperWrapped tightly about said support, Witnesses: and clamping means at;each end of-Smd r011 FREDERICK WILLIAMWORTH. I for holding saidcoverinplace. 4 ARTHUR ERNEST JERRAM.

Cupid: of this patent niay be obtaind for in cents each, by addressingthe Oommissiouer of latents,

' Washingtomhfl.

